No one has recorded when well digging started, but surely humans imitated elephants in digging holes in the sand to access cooler water that didn’t make the children sick. Eventually, humankind began to redesign, maintain, and repair the wells they constructed, but when wells became "commodities" in the twentieth century, this maintenance ethic was
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Língua Inglês ● Formato PDF ● Páginas 334 ● ISBN 9780849375774 ● Editora CRC Press ● Publicado 2009 ● Carregável 3 vezes ● Moeda EUR ● ID 4111161 ● Proteção contra cópia Adobe DRM
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